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1.1 These test methods cover the chemical analysis of the pigment commercially known as basic lead silicochromate and are applicable to pigment supplied by the manufacturer and to pigment, but not mixed pigments, separated from liquid coatings. The presence of basic lead silicochromate species shall be confirmed by X-ray diffraction analysis (see Specification D 1648).
1.2 For liquid coatings the pigment must first be separated from the vehicle before conducting the analysis.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D185 Test Methods for Coarse Particles in Pigments
D280 Test Methods for Hygroscopic Moisture (and Other Matter Volatile Under the Test Conditions) in Pigments
D281 Test Method for Oil Absorption of Pigments by Spatula Rub-out
D387 Test Method for Color and Strength of Chromatic Pigments with a Mechanical Muller
D1193 Specification for Reagent Water
D1648 Specification for Basic Lead Silicochromate Pigment
D2371 Test Method for Pigment Content of Solvent-Reducible Paints
ICS Number Code 87.060.10 (Pigments and extenders)
UNSPSC Code 12171600(Pigments)
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ASTM D1844-86(2003), Standard Test Methods for Chemical Analysis of Basic Lead Silicochromate, ASTM International, West Conshohocken, PA, 2003, www.astm.orgBack to Top